<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{ this.currentCity }}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            @click="handleCityClick(item.name)"
            v-for="item of hot"
            :key="item.id"
          >
            <div class="button">{{ item.name }}</div>
          </div>
        </div>
      </div>

      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{ key }}</div>
        <div class="item-list ">
          <div
            @click="handleCityClick(innerItem.name)"
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
          >
            {{ innerItem.name }}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import BScroll from "better-scroll";
import { mapState, mapMutations } from "vuex";
export default {
  name: "CityList",
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: "city"
    })
  },
  methods: {
    handleCityClick(city) {
      //this.$store.commit('changeCity',city);
      this.changeCity(city);
      this.$router.push("/");
      console.log(city);
    },
    ...mapMutations(["changeCity"])
  },
  mounted() {
    this.scroll = new BScroll(this.$refs.wrapper);
  },
  watch: {
    letter() {
      if (this.letter) {
        const element = this.$refs[this.letter][0];
        this.scroll.scrollToElement(element);
      }
    }
  }
};
</script>

<style lang="stylus" scoped>
@import '~@/assets/variable.styl'
.border-topbottom
    &:before
        border-color: #ccc
    &:after
        border-color: #ccc
.border-bottom
    &:before
        border-color: #ccc
.list
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    overflow: hidden
    .title
        line-height: .54rem
        background: #eee
        padding-left: .2rem
        color: #666
        font-size .26rem
    .button-list
        overflow: hidden
        padding: .1rem .6rem .1rem .1rem
        .button-wrapper
            float: left
            width: 33.33%
            .button
                margin: .1rem
                padding: .1rem 0
                text-align center
                border: .02rem solid #ccc
                border-radius .06rem
    .item-list
        .item
            line-height: .76rem
            padding-left: .2rem
</style>
